Neco Model Questions Vol1 2019 Biology Question 24
Practice objective / multiple choice question 24 from the 2019 Neco Model Questions Vol1 Biology examination.
A spherical animal cell has a radius of \(10\ \mu\text{m}\). Its plasma‑membrane permeability to glucose is \(P = 1.2 \times 10^{-5}\ \text{cm\ s}^{-1}\). External glucose concentration is \(5\ \text{mM}\) and internal concentration is \(1\ \text{mM}\). Using the equation \(\text{Rate}=P\times A\times\Delta C\) (where \(A\) is the membrane surface area and \(\Delta C\) the concentration difference in \(\text{mol\ cm}^{-3}\)), calculate the rate of glucose entry into the cell in \(\text{mol\ s}^{-1}\). Express your answer in scientific notation to two significant figures.
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This is Neco Model Questions Vol1 2019 Biology Question 24. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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